<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 搜索与添加区域 -->
      <!-- :gutter="20" 列的间隙 -->
      <!-- :span="8" 列的长度 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容"
                    v-model="queryInfo.query"
                    clearable
                    @clear="getUserList">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary"
                     @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 竖直方向的边框 :border='true'-->
      <el-table :data="userlist"
                :border='true'
                :stripe="true">
        <el-table-column label="#"
                         type="index"> </el-table-column>
        <!-- <el-table-column type="index"></el-table-column> -->
        <el-table-column label="姓名"
                         prop="username"> </el-table-column>
        <el-table-column label="邮箱"
                         prop="email"> </el-table-column>
        <el-table-column label="电话"
                         prop="mobile"> </el-table-column>
        <el-table-column label="角色"
                         prop="role_name"> </el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <!-- {{scope.row}} 获取一整行数据 -->
            <!-- {{scope.row.mg_state}} 获取开关值 -->
            <!-- change事件 switch 状态发生变化时的回调函数 -->
            <el-switch v-model="scope.row.mg_state"
                       @change="userStateChanged(scope.row)"
                       active-color="#13ce66"
                       inactive-color="#ff4949">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- {{scope.row}} -->
            <!-- 修改按钮 -->
            <!-- circle ture为圆形 -->
            <el-button type="primary"
                       icon="el-icon-edit"
                       circle
                       @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="light"
                       icon="el-icon-delete"
                       circle
                       @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <!-- effect="dark" 默认提供的主题
            el-tooltip 文字提示
            enterable 鼠标是否可进入到 tooltip 中
           -->
            <el-tooltip effect="dark"
                        content="分配角色"
                        placement="top"
                        :enterable="false">
              <el-button type="warning"
                         icon="el-icon-setting"
                         circle
                         @click="setRole(scope.row)">
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页导航区域
            @size-change(pagesize改变时触发)
            @current-change(页码发生改变时触发)
            :current-page(设置当前页码)
            :page-size(设置每页的数据条数)
            :total(设置总页数) -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[10, 20, 50, 100]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>
    </el-card>

    <!-- 对话框组件
            添加对话框
            :visible.sync(设置是否显示对话框)
            width(设置对话框的宽度)
            :before-close(在对话框关闭前触发的事件)
            @close="addDialogClosed" 将表单重置
        -->
    <el-dialog title="添加用户"
               :visible.sync="addDialogVisible"
               width="50%"
               @close="addDialogClosed">
      <!-- 内容主题区域 -->
      <!-- :model="addForm" 数据绑定 -->
      <!-- :rules="addFormRules" 校验规则 -->
      <!-- ref="addFormRef" el-form组件的引用名称-->
      <!-- prop="username"
            Form 组件提供了表单验证的功能，只需要通过 rules 属性传入约定的验证规则，
            并将 Form-Item 的 prop 属性设置为需校验的字段名即可
            -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名"
                      prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码"
                      prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号"
                      prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <!-- disabled 禁止编辑 -->
    <el-dialog title="修改用户"
               :visible.sync="editDialogVisible"
               width="50%"
               @close="editDialogClosed">
      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username"
                    disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号"
                      prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色"
               :visible.sync="setRoleDialogVisible"
               width="50%"
               @close="setRoleDialogClosed">
      <!-- <span>需要被替换</span> -->
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId"
                     placeholder="请选择">
            <el-option v-for="item in rolesList"
                       :key="item.id"
                       :label="item.roleName"
                       :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱的规则
    const checkEmail = (rule, value, callback) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        callback()
      }
      callback(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    const checkMobile = (rule, value, callback) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        callback()
      }
      callback(new Error('请输入合法的手机号'))
    }
    return {
      // 用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 15, message: '长度在 3 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      editForm: {
        // 修改表单的验证规则对象
      },

      // 表单验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    // 用户列表
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.userlist = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听 pagesize 改变的事件
    handleSizeChange (newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
      // console.log(newPage)
    },
    // 监听 switch 开关状态的改变
    async userStateChanged (userinfo) {
      console.log(userinfo)
      const { data } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (data.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户信息失败')
      }
      this.$message.success('更新用户信息成功')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击确定按钮，添加新用户
    addUser () {
      // 调用validate进行表单验证
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return this.$message.error('请填写完整用户信息')
        const { data: res } = await this.$http.post('users', this.addForm)

        // 单引号: 所见即所得 里面的内容会原封不动显示出来
        // 双引号: 会解析里面的变量和特殊符号
        // 反引号: 反引号里面的内容会被优先执行
        if (res.meta.status !== 201) {
          console.log(res.meta)
          return this.$message.error('添加用户失败！')
        }
        console.log(res.meta)
        this.$message.success(res.meta.msg)
        // 关闭对话框
        this.addDialogVisible = false
        // 重新请求最新的数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      console.log(id)
      // 发送请求
      // const {data: res} = await this.$http.get('users/' + id)
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      // 将获取到的数据保存到数据editForm中
      console.log(res.data)
      this.editForm = res.data
      // 将修改弹窗显示出来
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return this.$message.error('请填写正确用户信息')

        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        // console.log(res)
        if (res.meta.status !== 200) {
          return this.$message('更新用户信息失败')
        }

        // 关闭对话框
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功')
      })
    },
    // 删除用户
    async removeUserById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole (userinfo) {
      this.userInfo = userinfo
      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolesList = res.data
      console.log('---')
      console.log(this.rolesList)
      this.setRoleDialogVisible = true
    },
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }

      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }

  }

}
</script>

<style lang="less" scoped>
</style>
